Hatch Report: Pseudochromis bitaeniatus

General
Name:	Matt Pedersen ( mPedersen ) Site: Lake Superior Marine Aquarium Club
Species:	Pseudochromis bitaeniatus ( Class: B, Points: 25 )
Link to Journal:	http://www.lsmac.org/smf/index.php?topic=136.0

Hatch Details
Spawn Date:	09/16/2010
Spawn Time of Day:	unknown
Hatch Date:	09/21/2010 5 Days After Spawn
Hatch Time of Day:	1:00 AM and later
Where Hatched:	In an glass vase incubator with a coarse bubble of air for circulation...about 2-3 bubbles per second. This setup did not work well compared to the use of a brine shrimp hatcher for my Ps. flavivertex, which hatched the same night. In both cases, the in
Eggs Removed Pre-Hatch:	Yes
Larvae Removed Post-Hatch:	Yes
Yolk Sac:	No
# Hatched	maybe 5
# Not Hatched	hundreds
Larvae Size	3.4 mm
First Food:	Rotifers in RotiGreen-Greenwater
Larvae Description: ( Do larvae have eyes, mouth, gut, attracted to light, etc?)	Clear with very little pigmentation. Well developed, big mouth. They looked very robust and ready to feed. There does not appear to be very much if any yolk sack.

Tank Parameters
Temperature:	unknown, but proabably 78F
PH:	not tested
Specific Gravity:	1.025
Size: (Gallons)	16 gallon black round tub, dimensions are approximate
Dimensions:	20 X 20 X 20
Lighting:	Ambient room light provided by a 22 watt 5000K Daylight flourescent (100 watt equivalent) from Home Depot in a metal reflector, hanging from ceiling
Lighting Schedule:	For incubation, the lights were on ambient and were turned out at night.

Other Details
Other Information:	I removed the eggs prematurely on the evening of the 19th, as I was expecting a hatch on that night (the 19th to 20th). Instead, the hatch came on the night starting the 20th going into the 21st. The eggs themselves were mostly fertile, but maybe 5% in the egg mass were dead when I harvested. In this first hatch report, my hatch rate was probably less than 0.1%. I blame this on my incubator, the early pulling, and not realizing that hitting the eggs with LIGHT a couple hours after lights out may actually STIMULATE a hatch.

Other Details

Other Information:

I removed the eggs prematurely on the evening of the 19th, as I was expecting a hatch on that night (the 19th to 20th). Instead, the hatch came on the night starting the 20th going into the 21st.

The eggs themselves were mostly fertile, but maybe 5% in the egg mass were dead when I harvested. In this first hatch report, my hatch rate was probably less than 0.1%. I blame this on my incubator, the early pulling, and not realizing that hitting the eggs with LIGHT a couple hours after lights out may actually STIMULATE a hatch.

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